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Thread: Progress of New Horizons in the Solar system

  1. #1201
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    The Failsafe 2 image has already been received, but they're only releasing it at the press conference at 3:30pm UTC today. This image should show about 5 pixels and we'll hopefully know the shape of UT.


    Also for those who missed it this is the current best photo of UT released publicly.
    https://upload.wikimedia.org/wikiped...ocessed%29.png

  2. #1202
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    Failsafe image 2. Spacecraft is healthy, however it cannot yet be confirmed that the LORRI camera imaged UT correctly, or missed it.

    https://upload.wikimedia.org/wikiped...cropped%29.png

  3. #1203
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    As anticpated, Ultima Thule is formed from two contact components. See here.

  4. #1204
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    No obvious craters, though the Sun-angle wouldn't be showing them off well in that image.
    Later, we can expect to see images from the side with shadows, and about four times the resolution.
    Forming opinions as we speak

  5. #1205
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    What sort of gravity would an astronaut standing on the "neck" of UT feel? Would there be forces on the sides too?

  6. #1206
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    Quote Originally Posted by Eclogite View Post
    As anticpated, Ultima Thule is formed from two contact components. See here.
    21 miles across! That'd take you about 20 minutes to drive across, going 60 mph....
    Everyone is entitled to his own opinion, but not his own facts.

  7. #1207
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    In this gif animation you can see a bit of the 3D shape of UT https://upload.wikimedia.org/wikiped...woCloseups.gif

  8. #1208
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    Quote Originally Posted by The_Radiation_Specialist View Post
    What sort of gravity would an astronaut standing on the "neck" of UT feel? Would there be forces on the sides too?
    I think it depends what you mean by "feel." If you mean "feel subjectively," I don't think the astronaut would feel anything at all. I suspect that you would need an instrument to actually feel it.
    As above, so below

  9. #1209
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    Quote Originally Posted by The_Radiation_Specialist View Post
    What sort of gravity would an astronaut standing on the "neck" of UT feel? Would there be forces on the sides too?
    This space.com article from 2015 covers it a little.

    But if you were on a dumbbell-shaped comet, gravity might pull you down and to the side, depending on where you were standing, Moorhead told Space.com.

    However, that gravitational tug wouldn't be overwhelmingly strong. The gravity of Halley's Comet, for example, is about equal to the gravity of Mount Everest if you were to remove the mountain from Earth and deposit it in space — if you were to drop an object from chest level, it would take about two minutes to hit the ground.

    "Its gravity is so low that if you can jump 8 inches [20 centimeters] on Earth, you could jump off Halley's Comet," Moorhead said, adding that you'd want to be very careful with your physical activities.
    At night the stars put on a show for free (Carole King)

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  10. #1210
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    Was New Horizons given a new target? Haven't kept up with the news there.

  11. #1211
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    The diagram shows candidates along NHs path but no apparent decisions on the JPL website.

    http://pluto.jhuapl.edu/Mission/Wher...0181031_v2.png

  12. #1212
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    Quote Originally Posted by schlaugh View Post
    The diagram shows candidates along NH’s path but no apparent decisions on the JPL website.

    http://pluto.jhuapl.edu/Mission/Wher...0181031_v2.png
    Excellent, thank you!

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